Conditional Statements
1)IF Conditon
2)SWITCH Condition
I) IF Condion
Syntax1:
if
Statement 1;
Else
Statement 2;
Syntax2:
If
{
statement 1;
statement 2;
}
else
{
statement 3;
statement 4;
}
Syntax3:
If //nested if condition
Statement 1;
Else if
Statement 2;
Else if
Statement 3;
Else
Statement 4;
Example:
Comparing 2 numbers
private void button1_Click(object sender, EventArgs e)
{
int i=10,j=20;
if(I>j)
MessageBox.Show("i is greater than j");
Else
Messagebox.show(“j is greater than I”);
}
I) SWITCH Condition:
Syntax:
Switch
{
case 1:
statement 1;
statement 2;
break;
case 2:
statement 3;
statement 4;
break;
default:
statement 5;
statement 6;
break;
}
LOOPS:
1) For Loop:
2) while Loop:
3) Do while Loop:
1 Executing body once is called as one iteration
2 When number of iterations are defined use for loop
3 When number of iterations are defined use while loop
4 When number of iterations are not defined but to execute at least once use do-while loop
Syntax:
For (Initialization; condition;++/--)
{
statement 1;
statement2;
}
Example1: write a program to print from 1 to 10?
class Program
{
static void Main(string[] args)
{
for (int i = 1; i <= 10; i++)
Console.WriteLine(i);
Console.ReadLine();
}
}
Syntax of while loop:
While(condition)
{
statement1;
statement2;
statement3;
}
Syntax of do while loop:
Do
{
statement 1;
statement 2;
statement 3;
}
while(condition)
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